package main

import (
	"bytes"
	"fmt"
)

func main()  {
	//func Join(s [][]byte, sep []byte) []byte {
	byteArray := [][]byte{
		[]byte("Hello"),
		[]byte("World"),
		[]byte("Itcast")}

	result := bytes.Join(byteArray, []byte(""))
	fmt.Printf("result : %s\n", string(result))
}
